Terminal-fitting for electrical installations



, w. H. VIB BER.

TERMINAL FITTING FOR ELECTRICAL INSTALLATIONS.

APPLICATION FILED AUG-9| I920.

1,385,650. Patented y 26,1921.

UNITED STATES PATENT OFFICE.

WHEELER :1. VIZBBEB,'OZF N LONDON, c N Ec'mcuT, ASSIGNOR or ONE-HALFTOTHE GILLETTE-VIBBER '00., OF NEW LONDON, coNNEc'rIcU'r, 'A CORPORATION.

TERMINAL-FITTING FOR ELECTRICAL INSTALLATIONS.

Specification of Letters Patent.

Patented July 26', 1921,

Application filed August 9, 1920. Serial No. 402,263.

To all whom it may concern:

Be it known that I, WHEELER H. VIBBER, a citizen ofthe United States,residing at New London, in the county of New London and State ofConnecticut, have invented a new and useful Improvement in Terminal-Fittings for Electrical Installations; and I do hereby declare'thefollowing, when taken in connection with the accom anying drawings andthe characters of re erence marked thereon, to be a full, clear, andexact descrip tion of the same, and which said drawings constitute partof this application, and represent, in v Figure 1, a view in sideelevation of a terminal fitting embodying my invention.

Fig. 2, a view thereof in end elevation.

a Fig. 3, a view thereof in longitudinal section as applied toaconduit-p1pe shown in section and broken away.

Fig. 4, a View in transverse section on the line 4-4 of Fig. 1.

Fig. 5, a detached plan view of the mountin -nut. I 1 y inventionrelates to an improvement in terminal fittings of the type employed tolead service wires out of a conduit-pipe to a lighting or othertranslating device, the

object being to. roduce a simple, convenient and effective evice' of thecharacter described, constructed with articular reference to cheapnessofmanu acture, compactness of form and attractiveness of appearance. v

With these endsin view my invention consists in a terminal fittinghavingcertain details of construction as will be hereinafter described andpointed out in the claims.

In carrying out my invention as herein shown, I employ an insulatinghead 5 made of porcelain or other equivalent insulatin 9 material andshown as having a rounde outer end formed with three radiating outlets 6though the form of the head and the number of outlets may be varied asrequired. At its inner end,the headis formed with a circumferentialgroove 7 for the reception of a retaining-flange 8 produced by turninginwardly the outer end of a mounting band 9 formed of relativel thinsheet metal and having its inner en turned inwardly to form aretaining-flange 10 which 1s, as it were, clasped over the outer face.

of a mounting-nut 11 the internalthreads of which prov de for screwingthe fitting upon the externally threaded end of the conduit-pipe 12,upon which the inner end of the head 5 is seated as shown in Fig. 3. Asshown the said mounting-nut 11 is an ordinary standard hexagon conduitlock-nut of a SIZE just adapted to enter the mounting band 9 so that thehigh points of its facets Wlll engage with the inner periphery thereof.

In case the nut and bandshould tend to sl p one upon the other, the bandbeing thin, Wlll deform sufiiciently to permita wrench to grip thefacets of the nut through the metal of the band. 7

I do not, however, limit myself to the use of a hexagonal or polygonalnut, since I might employ other means such as solder,

for coupling the nut and band for rotation together, my invention beingcharacterized by the utilization of a standard commercial conduitlock-nut non-rotatably mounted in a light sheet-metal band carrying theinsulating head in place of a metal sleeve heavy enough to be internallythreaded for being screwed directly upon the conduit-pipe, and onaccount of being heavy enough for that purpose, diflicult to have itsouter end crlmped into the circumferential groove of the head withoutdanger of cracln'ng'the same. These objections are avoided by mylnvention, by which I also secure economy of space and material.

I claim:

1 A terminal fitting for electrical instal latlon, having aninsulating-head formed with a peripheral groove, a nut adapted to bemounted upon the threaded end of a condult-pipe, and a light sheet-metalmount- 1ng-band having one end turned into the said peripheral groove ofthe insulatinghead, and its other end turned over upon the sad nut andadapted to be compressed thereupon for its non-rotatable connectiontherewith.

2. A terminal fitting for electrical instaland a light sheet-metalmounting-band havspecification in the presence of two subscribing oneenddturnet}1 into the saicll groove fend ing witnesses. its other enturne over upon t 1e outer ace of the said nut upon the high points ofWHEELER VIBBER 5 which the band is compressed for its non- Witnesses:

rotatable connection therewith. Lmm- YARVOTS, In testimony whereof Ihave signed this R. K. BURROWS.

